The ATP will donate £ 383,000 to the bushfire fighting efforts in Australia.
This gesture, on behalf of the men's tennis governing body, was announced by Novak Djokovic and Rafael Nadal after the ATP Cup final in Sydney.
The money is shared between the WWF Australian Wildlife and the Nature Recovery Fund.
"This donation is on behalf of all players," said Djokovic, president of the ATP Player Council. "Our thoughts and prayers are addressed to everyone concerned."
Djokovic inspired Serbia to win the opening competition when his win over Nadal helped his country defeat Spain 2-1.
He added: "Australia is an amazing and welcoming country and it feels like home at the start of every season. Seeing the damage to wildlife and nature was devastating."
Some players have already pledged personal donations for relief efforts as part of the # Aces4BushRelief campaign.
Serena Williams donated her earnings after winning the Auckland Classic, and along with Nadal, Roger Federer and local hero Nick Kyrgios, she will take part in the Rally4Relief exhibition in Melbourne on Wednesday to raise money for the Australian Open.
Kyrgios had previously announced that he would donate $ 200 Australian dollars (£ 106) for every ace he hits this season.
Former Australian cricketer Shane Warne raised over £ 500,000 by auctioning off his baggy green hat, and he and former Australian captain Ricky Ponting will defeat the opposing teams in a special Twenty20 game on February 8th.
And current Australian spinner Nathan Lyon donated £ 5,300 for the 10 goals he scored in Australia's win over New Zealand in their last friendly in Sydney.